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FG17

Negative-control mercury-vapor thyratron for relay circuits and low-grid-power control. Its massive filament supports heavy industrial switching current.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: UX4
Base pins: -
Nominal heater: 2.5 V / 50 A

Description

Negative-control mercury-vapor thyratron for relay circuits and low-grid-power control.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: UX4
Base pins: -
Nominal heater voltage: 2.5 V
Nominal heater current: 50 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Thyratron

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted fields mapped semantically from printed ratings/characteristics headings. Fixed promoted fields are largely inapplicable to this special-purpose device; additional published data is retained in TUBE_SECTION_PARAMETER where text recovery permits.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Filament heating time, typical........ .. .. S
5 seconds
Filament heating time, typical........ .. .. S ........5 seconds
Ionization time, approx
10 microseconds
Ionization time, approx....................................10 microseconds
Deionization time, approx
1000 microseconds
Deionization time, approx........ ... ..............1000 microseconds
Maximum time of averaging current. . .. .......................c
15 seconds
Maximum time of averaging current. . .. .......................c.........15 seconds
Temperature limits, condensed mercury........................1t40 to +
80 degC
Temperature limits, condensed mercury........................1t40 to +80 centigrade
Recommended temperature, condensed mercury. .. ................... ... +
40 degC
Recommended temperature, condensed mercury. .. ................... ... +40 centigrade
///,//A
2 %
///,//A 2%4 2400